diff -r 56f07b52213a -r b2823ea26631 gameServer/hedgewars-server.cabal
--- a/gameServer/hedgewars-server.cabal	Tue Jun 02 18:37:40 2015 +0100
+++ b/gameServer/hedgewars-server.cabal	Tue Jun 02 19:51:04 2015 +0100
@@ -33,7 +33,7 @@
     utf8-string,
     SHA,
     entropy,
-    zlib
+    zlib >= 0.5.3 && < 0.6
 
   if !os(windows)
     build-depends: unix